EP0435360B1 - Hochdruckschlauch für ein modulares Benzinzuführungssystem - Google Patents

Hochdruckschlauch für ein modulares Benzinzuführungssystem Download PDF

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Publication number
EP0435360B1
EP0435360B1 EP90203170A EP90203170A EP0435360B1 EP 0435360 B1 EP0435360 B1 EP 0435360B1 EP 90203170 A EP90203170 A EP 90203170A EP 90203170 A EP90203170 A EP 90203170A EP 0435360 B1 EP0435360 B1 EP 0435360B1
Authority
EP
European Patent Office
Prior art keywords
annular
fir
tree
pressure
outside
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90203170A
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English (en)
French (fr)
Other versions
EP0435360A1 (de
Inventor
Robert Clair Beer
Samuel G. Griffith
Timothy Francis Coha
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of EP0435360A1 publication Critical patent/EP0435360A1/de
Application granted granted Critical
Publication of EP0435360B1 publication Critical patent/EP0435360B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0017—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor related to fuel pipes or their connections, e.g. joints or sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank
    • F02M37/0082—Devices inside the fuel tank other than fuel pumps or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/30—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses comprising parts inside the hoses only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S285/00—Pipe joints or couplings
    • Y10S285/903—Corrugated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8342—Liquid level responsive indicator, recorder or alarm
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86348—Tank with internally extending flow guide, pipe or conduit

Definitions

  • This invention relates to high-pressure hoses in modular fuel delivery systems on automobile fuel tanks as specified in Claim 1.
  • An example of a hose is disclosed in US-A-3,794,080.
  • Manufacturing economies are achieved by grouping several functionally-related components into a module which is handled and installed as a unit.
  • modular fuel delivery systems have been proposed for direct installation on a fuel tank.
  • Such systems are typically inserted through a hole in the top of the fuel tank and usually include a reservoir canister, a pump in the canister, a cover for the hole in the tank, elements for attaching the canister to the cover, and a flexible high-pressure hose for conducting high-pressure fuel from the pump to a fluid connector on the cover.
  • the high-pressure hose may be of rubber or of flexible plastics material and is usually provided with a loop section to accommodate thermal and pressure-induced expansion and shrinkage of the gap between the canister and the cover.
  • the ends of the high-pressure hose are typically pushed over tubular stems of fluid connectors and retained either by the natural resilience of the hose gripping annular "fir-tree” or similar barbs on the stems or by hose clamps around the outside of the hose.
  • a high pressure blow-moulded elastomeric hose according to this invention as specified in claim 1 includes structural features at its ends which minimize the difficulty of pushing the ends over the tubular stems and which maximize resistance to dislodgment of the ends from the stems.
  • This invention is a new and improved high-pressure hose between a pump in a canister of a modular fuel delivery system on an automobile fuel tank and a cover closing an access hole in the tank.
  • the high-pressure hose according to this invention is made of fuel-resistant, blow-mouldable elastomer, preferably a commonly-available material such as NYLON 11, and includes a flexible body having a plurality of annular sinusoidal convolutions, a pair of relatively stiff non-convoluted cylindrical ends, a pair of inside annular beads on each cylindrical end, and a plurality of outside annular beads on each cylindrical end.
  • the inside beads on each cylindrical end are pushed over and co-operate with annular "fir-tree" barbs on tubular stems of fluid connectors to maximize resistance to dislodgment of the cylindrical ends from the stems.
  • the outside beads on the cylindrical ends define convenient abutments whereby the cylindrical ends can be engaged without radial distortion by pushing implements required to push the relatively stiff cylindrical ends and inside beads over the "fir-tree" barbs.
  • the inside beads have radial heights not exceeding about 4.5% of the inside diameter of the cylindrical ends of the hose and the outside beads have similar radial heights of not less than about 4.5% of the inside diameter of the cylindrical ends of the hose.
  • a modular fuel delivery system 10 includes a reservoir canister 12 having a top 14 and a cylindrical wall 16 with a flat side 18.
  • a metal bracket 20 is rigidly attached to the reservoir 12 parallel to the flat side 18.
  • a fuel level transducer 22 is rigidly attached to the bracket 20 between the latter and the flat side 18 and includes a float 24 on an arm 26 which pivots with changes in the surface level of the fuel in a tank, not shown, on which the fuel delivery system 10 is installed.
  • a fluid connector 28 having a tubular stem 30 is attached to the top 14 of the canister 12.
  • the tubular stem 30 has a pair of fir-tree barbs 32A-32B thereon, as shown in Figures 1, 3 and 4.
  • the discharge port of a conventional electric fuel pump, not shown, in the canister 12 communicates with the stem 30 below the top 14.
  • the electric pump is connected to the electrical system of an automobile on which the fuel delivery system is mounted through an in-tank portion 34 of the wiring harness of the vehicle. When the ignition of the vehicle is switched on, the pump delivers high-pressure fuel to the stem.
  • the fuel delivery system 10 further includes a cover 36 for closing a hole in a top wall, not shown, of the fuel tank.
  • the cover 36 is a flat plastics disc having a upper, exposed surface 38, a lower, inside surface, not shown, facing the canister 12, and an integral depending flange 40.
  • the disc has an annular shoulder 42 radially outboard of the depending flange 40 which seats against a seal, not shown, on the top wall of the tank around the access hole. Conventional means, not shown, clamp the cover 36 to the top wall of the tank.
  • the cover has a moulded-in or otherwise sealingly-attached electrical connector 44 which defines a junction between the in-tank portion 34 of the wiring harness and an outside portion 46 of the wiring harness.
  • the cover 36 is connected to the canister 12 by a plurality of identical hollow struts 48.
  • Each strut has an upper end press-fitted into a socket, not shown, in the cover 36 and a lower end telescopically-received in a cylindrical bore in the top 14 of the canister.
  • Coil springs 50 are each disposed around respective ones of the struts and urge relative separation between the cover 36 and the canister 12. Stops, not shown, at the lower ends of the struts 48 limit the relative separation between the canister and the cover. The springs maintain the canister 12 in contact with the bottom of the fuel tank so that the fuel level signal from the transducer 22 is bottom-referenced.
  • the cover 36 has a plurality of moulded-in fluid connectors including a high-pressure connector 52, a vapor connector 54, and a low-pressure, return fuel connector 56.
  • the high-pressure connector On the exposed surface 38 of the cover, the high-pressure connector includes an outside tubular stem 58 on which are formed a plurality of annular "fir-tree” barbs. The outside stem 58 receives the end of a fuel hose, not shown, through which high-pressure fuel is directed to the engine of the vehicle.
  • the high-pressure connector 52 includes an inside tubular stem 60 on which are formed a pair of annular "fir-tree" barbs 62A, 62B.
  • a high-pressure hose 64 according to this invention is disposed between the stem 30 of the connector 28 on the canister top 14 and the inside tubular stem 60 of the high-pressure connector 52 on the cover 36.
  • the high-pressure hose 64 includes a tubular body 74 having a plurality of annular sinusoidal convolutions 76 and a pair of integral, relatively inflexible cylindrical ends 78A, 78B.
  • the high-pressure hose 64 is blow-moulded from fuel-resistant plastics material, preferably a commonly-available material such as NYLON 11.
  • NYLON 11 is commercially available from ATOCHEM, Inc., Glen Rock, New Jersey, U.S.A.
  • Non-convoluted hoses made of NYLON 11 have been used in the past as high-pressure hoses in automotive fuel systems.
  • both longitudinally-split and unsplit convoluted hoses made of NYLON have been used by Packard Electric Division, General Motors Corporation, in automobile wiring harnesses to protect bundles of wires inside the hoses.
  • the cylindrical end 78A and its connection to the tubular stem 30 of the connector 28 is representative of both cylindrical ends of the high-pressure hose and has a circular end 80 having an inside diameter D1, see Figure 3.
  • Each of the "fir-tree" barbs 32A, 32B on the tubular stem 30 of the connector 28 has a tapered, frustoconical wall 82A, 82B leading to an annular shoulder 84A, 84B around the stem having an outside diameter D2, see Figure 3, exceeding inside diameter D1.
  • the cylindrical end 78A is inwardly indented to define a pair of annular inside beads 86A,86B near the circular end 80 thereof.
  • the beads 86A, 86B are axially spaced a distance corresponding to the spacing between the annular shoulders 84A, 84B on the tubular stem 30.
  • Each bead 86A, 86B has a radial height H1, see Figure 3, not exceeding about 4.5% of the diameter D1 of the circular end 80.
  • Inside beads of this general dimension have been found to afford acceptable retention on a NYLON 11 high-pressure hose having a cylindrical end with D1 equal to about 8.05mm.
  • the cylindrical end 78A is outwardly indented to define three annular outside beads 88A, 88B, 88C between the body 74 of the high pressure hose and the inside beads 86A, 86B.
  • Each outside bead 88A, 88B, 88C has a radial height H2, see Figure 4, not less than about 4.5% of the inside diameter D1 of the cylindrical end 78A.
  • Outside beads of this general dimension have been found to provide acceptable abutments for press-fitting cylindrical ends with D1 equal to about 8.05mm on "fir-tree" barbs with D2 equal to about 10.96mm.
  • the high-pressure hose 64 is looped between the tubular stems 30 and 60 to accommodate thermal or pressure-induced expansion and shrinkage of the gap between the canister 12 and the cover 36.
  • the radial height H1 of the inside beads 86A, 86B is an important feature of this invention because it increases the retention of the cylindrical end 78A of the high-pressure hose 64 on the tubular stem 30.
  • the inside diameter D1 of the hose is about 2.91mm smaller than the outside diameter D2 of the annular shoulders 84A, 84B. This amount of interference between the hose and the stem permits the relatively stiff cylindrical end to be pushed over the fir-tree barbs without collapsing the cylindrical end.
  • the inside beads 86A, 86B incrementally increase the force required to push the cylindrical end 76A over the "fir-tree" barbs 32A, 32B on the tubular stem 30 to levels beyond manual capability.
  • the annular outside beads 88A, 88B, 88C define abutments on the cylindrical end suitable for engagement by any convenient vice-like fixture, not shown, whereby axial force is applied to the cylindrical end 78A between the convoluted body 74 and the inside beads 86A, 86B. Because the outside beads stand above the outside surface of the cylindrical end 78A, indenting or gouging or otherwise radially deforming the cylindrical end is not required for press-fitting the cylindrical end on the tubular stem 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Claims (2)

  1. Ein durch ein Blasverfahren geformter, elastomerer Hochdruckschlauch (64) in einem modularen Kraftstoffördersystem (10), das einen Kanister (12) einschließt mit einem Fluid-Verbinder (28) darauf, der einen ersten röhrenförmigen Schaft (30) besitzt, der einen darauf geformten, tannenzapfenartigen Widerhaken (32A, 32B) einschließt, welcher eine ringförmige Schulter (84A, 84B) mit einem ersten Außendurchmesser (D2) besitzt, und eine Abdeckung (36), die mit dem Kanister (12) verbunden und davon um eine variable Lücke beabstandet ist und einen Hochdruck-Fluid-Verbinder (52) darauf besitzt, der einen zweiten röhrenförmigen Schaft (60) mit einem darauf geformten, tannenzapfenartigen Widerhaken (62A, 62B) einschließt, der eine ringförmige Schulter mit dem ersten Außendurchmesser (D2) besitzt, wobei der durch ein Blasverfahren geformte, elastomere Hochdruckschlauch (64) aufweist: einen flexiblen Körper (74) mit einer Vielzahl ringförmiger sinusförmiger Windungen (76); und ein Paar von integralen zylindrischen Enden (78A, 78B) an entgegengesetzten Enden des Körpers (74), wobei jedes einen Innendurchmesser (D1) hat, der kleiner als der erste Außendurchmesser (D2) ist und jedes für einen Druckpaß-Eingriff auf dem tannenzapfenartigen Widerhaken (32A, 32B; 62A, 62B) auf jeweils einem der ersten und der zweiten röhrenförmigen Schafte (30, 60) angepafft ist; indem mindestens eine ringförmige Innenrippe (86A, 86B) vorhanden ist, die auf jedem der zylindrischen Enden (78A, 78B) definiert ist und hinter einer jeweiligen ringförmigen Schulter (84A, 84B) auf jeweils einem der tannenzapfenartigen Widerhaken (32A, 32B, 62A, 62B) im Eingriff steht für eine erhöhte Arretierung der zylindrischen Enden (78A, 78B) auf den ersten und den zweiten röhrenförmigen Schaften (30, 60); und indem mindestens eine ringförmige Außenrippe (88A, 88B, 88C) vorhanden ist, die integral auf jedem der zylindrischen Enden (78A, 78B) zwischen dem gewundenen Körper (74) und allen ringförmigen Innenrippen (86A, 86B) geformt ist, bei welcher eine Kraft angelegt werden kann, um jedes der zylindrischen Enden (78A, 78B) auf jeweils einem der ersten und der zweiten röhrenförmigen Schafte (30, 60) durch Druck anzupassen.
  2. Ein Hochdruckschlauch gemäß Anspruch 1, dadurch gekennzeichnet, daß jede ringförmige Innenrippe (86A, 86B) eine radiale Höhe besitzt, die etwa 4,5% des Innendurchmessers (D1) nicht überschreitet, und jede ringförmige Außenrippe (88A, 88B, 88C) eine radiale Höhe besitzt, die nicht geringer als etwa 4,5% des Innendurchmessers (D1) ist.
EP90203170A 1989-12-26 1990-12-01 Hochdruckschlauch für ein modulares Benzinzuführungssystem Expired - Lifetime EP0435360B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US456691 1989-12-26
US07/456,691 US4972875A (en) 1989-12-26 1989-12-26 High pressure hose for modular fuel delivery system

Publications (2)

Publication Number Publication Date
EP0435360A1 EP0435360A1 (de) 1991-07-03
EP0435360B1 true EP0435360B1 (de) 1993-08-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90203170A Expired - Lifetime EP0435360B1 (de) 1989-12-26 1990-12-01 Hochdruckschlauch für ein modulares Benzinzuführungssystem

Country Status (4)

Country Link
US (1) US4972875A (de)
EP (1) EP0435360B1 (de)
CA (1) CA2029071C (de)
DE (1) DE69002928T2 (de)

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CN103097166B (zh) * 2010-06-15 2016-04-27 肖恩发展有限责任公司 用于流体贮存器的槽模块接口
USD668572S1 (en) 2012-01-17 2012-10-09 Rochester Gauges, Inc. Liquid level gauge
US8567244B2 (en) 2012-01-17 2013-10-29 Texas, LFP, LLC Liquid level transducer with isolated sensors
US9116030B2 (en) 2012-01-17 2015-08-25 Texas Lfp, Llc Liquid level transducer with isolated sensors
US9683874B2 (en) 2015-01-26 2017-06-20 Texas Lfp, Llc Universal mounting head construction for liquid level transducers and the like
USD783785S1 (en) * 2015-01-30 2017-04-11 Criser, S.A. De C.V. Drain hose
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JP6599248B2 (ja) * 2016-01-21 2019-10-30 愛三工業株式会社 燃料供給装置
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USD910082S1 (en) * 2019-04-17 2021-02-09 Fleece Performance Engineering, Inc. Pump cap
USD910083S1 (en) * 2019-05-08 2021-02-09 Fleece Performance Engineering, Inc. Pump cap
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Also Published As

Publication number Publication date
CA2029071C (en) 1993-11-16
DE69002928T2 (de) 1993-12-23
CA2029071A1 (en) 1991-06-27
DE69002928D1 (de) 1993-09-30
EP0435360A1 (de) 1991-07-03
US4972875A (en) 1990-11-27

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